Simulated zonal current characteristics in the southeastern tropical Indian Ocean (SETIO)

• Published in: Ocean science Vol. 17; no. 4; pp. 1115 - 1140
• Main Authors: Ningsih, Nining Sari, Sakina, Sholihati Lathifa, Susanto, Raden Dwi, Hanifah, Farrah
• Format: Journal Article
• Language: English
• Published: Katlenburg-Lindau Copernicus GmbH 23.08.2021; Copernicus Publications
• Subjects: Analysis; Annual variations; Climate; Coasts; Dipoles; El Nino; El Nino phenomena; El Nino-Southern Oscillation event; Equatorial currents; Equatorial regions; General circulation models; Indonesian Throughflow; Interannual variability; Interannual variations; Java Current; Ocean; Ocean currents; Ocean models; Oceans; Offshore; Orthogonal functions; Outflow; Salinity; Seasonal variations; Simulation; South Equatorial Current; Southern Oscillation; Transition zone; Tropical climate; Variability; Variation; Velocity; Wind; Indian Ocean; Indonesia; Madagascar; Sumatra
• ISSN: 1812-0792; 1812-0784; 1812-0792
• DOI: 10.5194/os-17-1115-2021

Detailed ocean currents in the southeastern tropical Indian Ocean adjacent to southern Sumatran and Javan coasts have not been fully explained because of limited observations. In this study, zonal current characteristics in the region have been studied using simulation results of a 1/8.sup." global hybrid coordinate ocean model from 1950 to 2013. The simulated zonal currents across three meridional sections were then investigated using an empirical orthogonal function (EOF), where the first three modes account for 75 %-98 % of the total variance. The first temporal mode of EOF is then investigated using ensemble empirical mode decomposition (EEMD) to distinguish the signals.